WPF Trigger command

I know in Silverlight there is a concept of behaviours.

In WPF we have Triggers,

What I am trying to a开发者_运维技巧chieve is that when a user has his mouse over a button, I want a command to be fired.

I have a RepeatButton that has its Command Property set, but I want that command (or preferable another command to fire) when the mouse is over that button.Is this possible in WPF.

The Button is in a Control Template.

Thanks

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